List of top Questions asked in CBSE CLASS XII

What does ( Ia ) indicate in the voltage equation of a DC motor? [ V = Eb + Ia Ra ]
The shape of a rotor is:
The peak energy stored in an RLC circuit divided by the average energy dissipated in the circuit per radian at resonance is called:
How many contactors does a star-delta motor starter require?
One BHP is equal to:
Write the full form of RWHS.
Write any two roles/functions of an entrepreneur.
Write the shortcut key which is used for ‘Select all’ option.
Ram has feelings of emptiness and abandonment. Name the type of personality disorder he has.
The type of personality disorder characterized by extreme professionalism, order and neatness is called
What is an adjective?
What are the possible problems that can occur at different subsections of cable TV?
Explain working, merits, demerits and application of moving coil microphone.
What are the precautions to be taken to prevent electric shock?
Explain the working principle of microwave oven.
With the help of a block diagram, explain the working principle of disc recording system.
Write some general causes of failure of recorder/player.
Explain the working and features of remote control of TV receiver.
What is a loudspeaker? Write names of different types of loudspeakers.
Write a short note on occupational hazards.
What are the faults which may occur in scanners?
What is the function of DC Biasing?
Write a short note on Tweeter.
Explain the process of scrambling.
Write any four steps that green jobs perform to reduce greenhouse gas emissions.